Rabo de Asno (Donkey's Tail Wall & Tunnel)

An isolated, fully offshore rock in the Farilhoes group, taking the dominant W-NW Atlantic groundswell head-on across an open arc from SW through W to NW that carries round to the SSW and NNW. The wall faces W into the open Atlantic (orientation 270), so the only shelter is the landward arc behind the granite rock: the N-NE quadrant is partly shadowed by the islet body, and the E-SE sector is the most damped, blocked by the Farilhoes and Berlenga Grande and looking back toward the Peniche mainland. This strong, exposed, current-swept position is what feeds the dense red gorgonian fields and makes the site weather-dependent, accessible only in calm windows.